Image Width (pixels):


Stress Analysis Report RTLS BLACK BOOM ARM

Analyzed File: BOOM ARM.ipt
Autodesk Inventor Version: 2025 (Build 290162010, 162A)
Creation Date: 5/22/2025, 7:22 PM
Study Author: Peter Cross
Summary: General Report of expected
deformation of HIPS plastic
boom arm assembly given 1.6x
forces applied to a single arm

Static Analysis:1

General objective and settings:

Design Objective Single Point
Study Type Static Analysis
Last Modification Date 5/22/2025, 7:20 PM
Model State [Primary]
Detect and Eliminate Rigid Body Modes No

iProperties

Summary

Title
Company

Project

Part NumberBOOM ARM

Physical

MaterialPolystyrene, High Impact
Density1.022 g/cm^3
Mass0.045853 kg
Area14947.8 mm^2
Volume44866 mm^3
Center of Gravityx=12.8012 mm
y=5.81411 mm
z=6 mm

Note: Physical values could be different from Physical values used by FEA reported below.


Mesh settings:

Avg. Element Size (fraction of model diameter) 0.1
Min. Element Size (fraction of avg. size) 0.2
Grading Factor 1.5
Max. Turn Angle 60 deg
Create Curved Mesh Elements Yes

Material(s)

Name Polystyrene, High Impact
General Mass Density 1.022 g/cm^3
Yield Strength 26.5 MPa
Ultimate Tensile Strength 26.5 MPa
Stress Young's Modulus 1.9 GPa
Poisson's Ratio 0.38 ul
Shear Modulus 0.688406 GPa
Part Name(s) BOOM ARM.ipt

Operating conditions

Gravity

Load Type Gravity
Magnitude9810.000 mm/s^2
Vector X123.503 mm/s^2
Vector Y-9809.223 mm/s^2
Vector Z0.000 mm/s^2
Selected Face(s)

Force:1

Load Type Force
Magnitude19.613 N
Vector X0.000 N
Vector Y19.613 N
Vector Z0.000 N
Selected Face(s)

Moment:1

Load Type Moment
Magnitude200.000 N mm
Vector X0.000 N mm
Vector Y-200.000 N mm
Vector Z0.000 N mm
Selected Face(s)

Pin Constraint:1

Constraint Type Pin Constraint
Fix Radial DirectionYes
Fix Axial DirectionYes
Fix Tangential DirectionNo
Selected Face(s)

Fixed Constraint:1

Constraint Type Fixed Constraint
Selected Face(s)

Fixed Constraint:2

Constraint Type Fixed Constraint
Selected Face(s)

Results

Reaction Force and Moment on Constraints

Constraint Name Reaction Force Reaction Moment
Magnitude Component (X,Y,Z) Magnitude Component (X,Y,Z)
Pin Constraint:1 199.633 N -182.925 N 0.0352933 N m -0.0138144 N m
79.9005 N 0.0324773 N m
2.72697 N 0 N m
Fixed Constraint:1 138.138 N 62.2489 N 0.246082 N m 0.00209686 N m
-123.317 N 0.0106499 N m
0 N -0.245842 N m
Fixed Constraint:2 122.96 N 120.551 N 0.0670574 N m 0.0281119 N m
24.1079 N 0.0587578 N m
-2.35639 N -0.0159354 N m

Result Summary

Name Minimum Maximum
Volume 44865.9 mm^3
Mass 0.045853 kg
Von Mises Stress 0.01179 MPa 9.03583 MPa
1st Principal Stress -2.04716 MPa 7.29908 MPa
3rd Principal Stress -10.7805 MPa 2.39555 MPa
Displacement 0 mm 8.93737 mm
Safety Factor 2.93277 ul 15 ul

Figures

Von Mises Stress

1st Principal Stress

3rd Principal Stress

Displacement

Safety Factor


F:\Desktop\Projects\RTLS_VIC\CAD\BOOM ARM.ipt


Image Width (pixels):